Alarm attachment for carding-machines.



No. 649,366. Patented May 8, |900. J. w. scoTT a. s. A. LEAcH.

ALARM ATTACHMENT FR CARD'ING MAG-HINES.

(Application med nec. e, 1869.)

(No Model.)

nl fipa ,L J 4 f fw hum" .9 fi mnunfun'lm .IAlllES lV. SCOTT AND SUMNERA. LEACII, OF WARREN, MAILN.

ALARM ATTACHMENT Foe CARDING-MACHINES.

SPECIFICATION 'forming part of Letters Patent No. 649,366, dai-,ea May8, ieoo.

Application filed December 8,1899. Serial No. 739,697; (No model.)

To aZZ whom, t may concern:

Be it known that we, JAMES W. Sco'rr and SUMNER A. LEACH, citizens ofthe United States, residing at Warren, in Ithe county of Knox and Stateof Maine, have invented a new and useful Alarm Attachment for Carding-Machines,of which the following is a speciiication.

This invention relates to alarm attachments for carding-rnachines; andthe object in view is to provide a simple, reliable, and eliicientdevice which is normally held out of operation by the sliver orfilaments in their passage from the doifer to the drawing-rollers of themachine, the device being interposed between the doffer anddrawing-rollers for the reason that the sliver or filaments are moreliable to break at that point than any other. W'hen a break occurs, thedevice sounds an alarm and enables an attendant to discover and mend thebreak before the broken end reaches and disarranges the feedingmechanism of the succeeding machine. The parts of the attachment are soarranged and electrically connected that the bail is normally upheld bythe sliver or filaments, and when the sliver breaks the bail falls andcompletes an electrical circuit, in which is placed an audible alarm,which is thereby sounded and the attention of the attendant called tothe fact that there has been a break in the sliver.

The detailed objects and advantages of the invention will appear in thecourse of the ensuing description.

The invention consists in certain novel features and details ofconstruction and arrangement of parts, as hereinafter fully described,

- illustrated in the drawings, and incorporated responding parts in allthe figures of the draw# ings.

In Fig. 1 we have illustrated a sufficient portion of a carding-machineto show the application of the alarm attachment thereto, and in saidfigure 1 designates the main or large cylinder; 2, the doffer; 3, thefunnel, and i the drawing-rollers, which form the filaments or sliverinto a ribbon.

The alarm attachment is interposed between the doer and the rollers, asshown in Fig. 1, and consists, essentially, of a stop-bail comprisingsubstantially-parallel side arms 5, connected at their free ends by across-bar 6, which passes over or across and above the sliver. Journaledor pivotally mounted upon the cross-bar 6 is what we term afilamentguard 7, consisting of a flat plate having one edge rolled toform a sleeve S, which surrounds and incloses the cross-bar 6, servingto maintain the filament-guard in place on the cross-bar and at the sametime allow the guard to swing freely and bear iiatwise against the upperside of the sliver. The object of the guard is to prevent the filamentsfrom becoming wound upon or entangled with the cross-bar of thestop-bail.

In connection with the stop-bail we employ a supporting-block 9, whichis mounted on any convenient part of the machine and provided at itsopposite ends with metal brackets 10, one of which forms part of anelectrical circuit. One of the side arms 5 of the stop-bail has itsextremity bent inward to form a pintle 11. The corresponding end of theother side arm 5-is also bent inward to form a journal 12, and the parts11 and 12 are pivotally received in openings in the projecting portionsof the metal brackets 10. One of the side arms 5 is extended to form acranked contact-arm 13, which is disposed obliquely with relation to itsbar 5 and adapted, when the bail swings downward, to rest against acontact-button 14:, inserted in a socket in the supporting-block 9, andhaving connected therewith a binding-post 15,whicl1 receives one of thewires 16 of an electrical circuit, in which is arranged an alarm-bell17, a battery 18, and a switch 19. The bracket 10, which receives thejournal l2, is also provided with a binding-post 20, which receives thereturn-wire 21, completing the circuit.

From the above it will be seen that in the event of the sliver breakingbetween the doffer and the drawing rollers the stop bail will fall, andin so doing the contact-arm 13 will rest against the contact-button 14and complete the circuit through the bell, which Will accordingly besounded. This gives notice to an attendant that a break has occurred, sothat said attendant may stop the machine Id before the broken end of thesliver reaches the succeeding machine anddisarranges the feedingmechanism thereof. In order to stop the bell from ringing, a cut-off22is provided,

which is pivotally mounted on the supporting-block at a point 23adjacent to the contact-button 14E. The button 22,which is composed ofnon-conducting material, is swung to a position between the contact-arm13 and button 14, thus cutting o' the alarm while zo the sliver is beingmended. The cut-off buttonL also assists in upholding the stop-bail inorder to assist the attendant in maintaining the sliver.

The alarm attachment may of course be 2 5 applied to the machine at anydesired point; but ordinarily it will be placed at the point described,as the sliver is more liable to break at that point than any other.

p From the foregoing it is thought that the 3o construction, operation,and many advantages of the herein-described invention will be apparentto those skilled in the art without further description, and it will beunderstood that various changes in the size, shape,

3 5 proportion, and minor details of construction may be resorted towithout departing from the spirit or sacrificing any of the advantagesof the invention.

Having thus described the invention, what is claimed as new, and desiredto be secured by Letters Patent, is-

1. In an alarm attachment for carding-machines, a supporting-block, aswinging bail mounted thereon, a contact-arm connected with said bail, acon tact-button, the arm and button forming parts of an electricalcircuit,

and a cut-off button adapted to be interposed between the contact-armand contactbutton, substantially as'specied.

2. In an alarm attachment for carding-machimes, a pivoted stop-bailcomprising side bars pivotally mounted and connected at their oppositeends by a cross-bar, a lamentguard carried by the cross-bar and adaptedto rest on and be upheld by the sliver, a con- 5` 5 tact-arm connectedwith one of the side bars, and a contact-button arranged in the path ofsaid arm as the bail swings downward, substantially as specied.

3; In anV alarm attachment for carding=ma 6o ehines, a pivoted stop-bailcomprising side bars pivotally mounted at one end and connected at theiropposite ends by a cross-bar,-

a filament-guard pivotally mounted on the cross-bar and adapted to reston and be upheld by the sliver, a contact=arm connected with one of theside bars, and a contact-'button arranged in the path of said arm as thebail swings downward, substantially as specied. 7o

4. In an alarm for cardingengines, the combination with an electricalcircuit including an alarm mechanism and a shaft-bearing as one of itsterminals, of a-sliver-sustained member pivotally supported below theslivers 7 5 path in said shaft-'bearing and provided with acontact-making arm, another terminal contact disposed in the path ofsaid contact-making arm, and a circuit-breaker mounted for interpositionbetween the terminal contact 8o and the contact-making arm and adaptedto temporarily maintain the sliver sustained member in an abnormalposition, substantially as described.

In testimony that We claim the foregoing as our own we have heretoaffixed our signatures in the presence of two witnesses.

JAMES YV. SCOTT. SUMNER A. LEACII.

Witnesses:

F. A. PACKARD, N. D. GOULD.

